Yes, previous Bitcoin high price is $20,000, people who are buying at the current value are aiming that the price of Bitcoin will cross more than $20,000. For some people, it is impossible to buy the whole amount of Bitcoin, so it is good to buy on parts whenever we see a downturn. So we should always aim Bitcoin as long term investments.
maybe it's true that Bitcoin can be a long-term investment tool, because for years the price of Bitcoin has risen sharply until now, but in 2018-2019 the price has decreased, if 2020 is able to reach the All Time high at $ 19000 then that's an extraordinary thing
The actual ATH was $19,891.00 according to
https://www.buybitcoinworldwide.com/bitcoin-days-since-high/...
Maybe if it hits $20,000 this year it would not stay at that price, it could move further and who knows we will reach $30,000.. a lot of things can still happen, it's still too early and it's normal people hyping on the upcoming halving but there should be other factor that would influence the price to move further high.